CA2353091A1 - Continuous process for irradiating of polytetrafluoroethylene (ptfe) - Google Patents
Continuous process for irradiating of polytetrafluoroethylene (ptfe) Download PDFInfo
- Publication number
- CA2353091A1 CA2353091A1 CA002353091A CA2353091A CA2353091A1 CA 2353091 A1 CA2353091 A1 CA 2353091A1 CA 002353091 A CA002353091 A CA 002353091A CA 2353091 A CA2353091 A CA 2353091A CA 2353091 A1 CA2353091 A1 CA 2353091A1
- Authority
- CA
- Canada
- Prior art keywords
- ptfe
- polytetrafluoroethylene
- irradiating
- continuous process
- vessel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920001343 polytetrafluoroethylene Polymers 0.000 title abstract 4
- 239000004810 polytetrafluoroethylene Substances 0.000 title abstract 3
- 238000010924 continuous production Methods 0.000 title 1
- 230000001678 irradiating effect Effects 0.000 title 1
- -1 polytetrafluoroethylene Polymers 0.000 title 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/08—Conditioning or physical treatment of the material to be shaped by using wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/05—Mixers using radiation, e.g. magnetic fields or microwaves to mix the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/406—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles with gas supply only at the bottom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
- B01F33/833—Devices with several tools rotating about different axis in the same receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
- B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
- B01F33/83613—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
- B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Disintegrating Or Milling (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Processing Of Solid Wastes (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
A system for continuously processing PTFE by irradiation and grinding includes a processing vessel having first and second horizontally adjacent agitators in first and second transversely adjacent vessel portions.
The bottom of the vessel has a step between the portions whereat heated air is injected for agitating and grinding the PTFE.
The bottom of the vessel has a step between the portions whereat heated air is injected for agitating and grinding the PTFE.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/208,117 | 1998-12-09 | ||
US09/208,117 US5968997A (en) | 1998-12-09 | 1998-12-09 | Continuous process for irradiating of polytetrafluorineethylene (PTFE) |
PCT/US1999/028431 WO2000034300A1 (en) | 1998-12-09 | 1999-12-01 | Continuous process for irradiating of polytetrafluoroethylene (ptfe) |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2353091A1 true CA2353091A1 (en) | 2000-06-15 |
CA2353091C CA2353091C (en) | 2008-08-12 |
Family
ID=22773250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002353091A Expired - Fee Related CA2353091C (en) | 1998-12-09 | 1999-12-01 | Continuous process for irradiating of polytetrafluoroethylene (ptfe) |
Country Status (9)
Country | Link |
---|---|
US (2) | US5968997A (en) |
EP (1) | EP1137657B1 (en) |
JP (1) | JP2002531645A (en) |
AT (1) | ATE252597T1 (en) |
AU (1) | AU1928900A (en) |
BR (1) | BR9916082B1 (en) |
CA (1) | CA2353091C (en) |
DE (1) | DE69912309T2 (en) |
WO (1) | WO2000034300A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6486481B1 (en) | 1999-11-12 | 2002-11-26 | Ausimont Usa, Inc. | Vibratory table apparatus and associated equipment and methods for radiation treatment of polymeric materials |
US6340718B1 (en) | 2000-07-24 | 2002-01-22 | Steris Inc | Method of radiation treatment for fluoropolymer materials |
US6881784B2 (en) * | 2002-03-14 | 2005-04-19 | Charles A. Cody | Methods for producing submicron polytetrafluoroethylene powder and products thereof |
US7152836B2 (en) * | 2003-01-09 | 2006-12-26 | Csav, Inc. | Adjustable tilt mount |
CA2514218C (en) * | 2003-01-27 | 2009-04-21 | Shamrock Technologies, Inc. | Method for producing submicron polytetrafluoroethylene powder and products thereof |
CN103170401B (en) * | 2013-04-03 | 2015-11-18 | 太仓金凯特种线缆有限公司 | Ultraviolet prepares the method for ultrafine PTFE powder in conjunction with hydrogen peroxide and carbon tetrachloride |
US20150258551A1 (en) * | 2014-03-13 | 2015-09-17 | Steven Cottam | Grinder Mill |
WO2018026017A1 (en) | 2016-08-04 | 2018-02-08 | ダイキン工業株式会社 | Method for producing low molecular weight polytetrafluoroethylene, low molecular weight polytetrafluoroethylene, and powder |
EP3643745A3 (en) | 2016-08-04 | 2020-07-22 | Daikin Industries, Limited | Powder comprising low molecular weight polytetrafluoroethylene and uses thereof |
CN110833789A (en) * | 2019-11-27 | 2020-02-25 | 贵阳铭鼎农业科技有限公司 | Pig feed production mixer |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3116226A (en) * | 1959-03-16 | 1963-12-31 | Du Pont | Irradiation of fluorocarbon copoluymers |
NL294110A (en) * | 1962-08-14 | |||
FR1437476A (en) * | 1965-02-26 | 1966-05-06 | Saint Gobain Techn Nouvelles | Method and device for irradiating fluids or granular or powdery products by exposure to a source of ionizing radiation |
US3617005A (en) * | 1969-03-18 | 1971-11-02 | Cypro Inc | Comminuting method of and means for conditioning thermoplastic molding material |
US4029870A (en) * | 1970-02-03 | 1977-06-14 | Imperial Chemical Industries Limited | Tetrafluoroethylene polymers |
US4036718A (en) * | 1970-02-03 | 1977-07-19 | Imperial Chemical Industries Limited | Process for preparing a friable tetrafluoroethylene polymer powder from unsintered coagulated dispersion grade tetrafluoroethylene polymer |
BE785797A (en) * | 1971-07-02 | 1973-01-03 | Ici Ltd | TETRAFLUOROETHYLENE POLYMER COMPOSITIONS |
US3766031A (en) * | 1972-04-10 | 1973-10-16 | Garlock Inc | Process for non-destructive radiation degradation of polytetrafluoroethylene |
DE2223550A1 (en) * | 1972-05-15 | 1973-12-06 | Hans-Joachim Dipl-Ing Selig | Fluidised mixing bed - imparts additional transverse motion to material |
US3840189A (en) * | 1973-05-23 | 1974-10-08 | Owatonna Mfg Co | Feed mill and mixer |
JPS5330673A (en) * | 1976-09-03 | 1978-03-23 | Meiki Seisakusho Kk | Process for regenerating scraps of thermosetting resin |
US4311570A (en) * | 1978-02-21 | 1982-01-19 | Imperial Chemical Industries Limited | Chemical process on the surface of a rotating body |
US4220511A (en) * | 1979-03-12 | 1980-09-02 | Radiation Dynamics, Inc. | Treatment of sintered poly-tetrafluoroethylene with irradiation and heat to produce a grindable material |
US4467969A (en) * | 1979-05-23 | 1984-08-28 | Standard Oil Company | On-line reclaim system |
US4748005A (en) * | 1982-05-03 | 1988-05-31 | Shamrock Chemicals Corporation | Apparatus and method for radiation processing of materials |
US4777192A (en) * | 1982-05-03 | 1988-10-11 | Shamrock Chemicals Corporation | Apparatus and method for radiation processing of materials |
US4577805A (en) * | 1984-05-31 | 1986-03-25 | Sperry Corporation | Agricultural mixing and grinding machine |
DE3912751C1 (en) * | 1989-04-19 | 1990-09-27 | Vetco Sanitec Gmbh, 3100 Celle, De | |
US5260351A (en) * | 1989-04-24 | 1993-11-09 | E. I. Du Pont De Nemours And Company | Radiation curing of perfluoroelastomers |
US5028010A (en) * | 1989-12-18 | 1991-07-02 | Itex Enterprises, Inc. | Apparatus for mixing solid or semi-solid wastes with additives |
DE59102266D1 (en) * | 1990-01-31 | 1994-08-25 | Pfitzer Christian | METHOD AND DEVICE FOR TREATING THE PARTICULAR MATERIAL WITH ELECTRON STRATEGIES. |
US5149727A (en) * | 1990-02-26 | 1992-09-22 | Medical Sterilization, Inc. | Irradiation device for fluoropolymers |
US5296113A (en) * | 1990-02-26 | 1994-03-22 | Luniewski Robert S | Irradiation device for fluoropolymers |
CA2038481C (en) * | 1991-03-18 | 1993-07-06 | Changize Sadr | Method and apparatus for recycling thermoplastic containers |
US5230476A (en) * | 1991-05-31 | 1993-07-27 | Marcus Rust | Vertical grinding and mixing tower |
US5253535A (en) * | 1991-12-03 | 1993-10-19 | E. I. Du Pont De Nemours And Company | Apparatus and method for monitoring mass flow of solids |
FR2685659B1 (en) * | 1991-12-27 | 1994-09-23 | Didier Lagneaux | PROCESS FOR REGENERATING PLASTIC MATERIALS FOR THE MANUFACTURE OF COMPOSITE PLASTIC PRODUCTS FOR COMMON USE AND THE INSTALLATION IMPLEMENTING THE PROCESS. |
US5732559A (en) * | 1996-06-17 | 1998-03-31 | Blentech Corporation | Rotational resistance cryogenic control system for chilling in a vacuum tumbler or agitator blender |
US5871159A (en) * | 1997-04-18 | 1999-02-16 | American Metal Fibers, Inc. | Fiber mixtures for brake pads |
US5882737A (en) * | 1998-03-20 | 1999-03-16 | Eckhoff; Paul S. | Apparatus and method for radiation processing of materials |
-
1998
- 1998-12-09 US US09/208,117 patent/US5968997A/en not_active Expired - Lifetime
-
1999
- 1999-08-11 US US09/371,978 patent/US6491243B2/en not_active Expired - Lifetime
- 1999-12-01 CA CA002353091A patent/CA2353091C/en not_active Expired - Fee Related
- 1999-12-01 JP JP2000586743A patent/JP2002531645A/en active Pending
- 1999-12-01 AU AU19289/00A patent/AU1928900A/en not_active Abandoned
- 1999-12-01 AT AT99962956T patent/ATE252597T1/en not_active IP Right Cessation
- 1999-12-01 DE DE69912309T patent/DE69912309T2/en not_active Expired - Lifetime
- 1999-12-01 WO PCT/US1999/028431 patent/WO2000034300A1/en active IP Right Grant
- 1999-12-01 EP EP99962956A patent/EP1137657B1/en not_active Expired - Lifetime
- 1999-12-01 BR BRPI9916082-0A patent/BR9916082B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE69912309D1 (en) | 2003-11-27 |
AU1928900A (en) | 2000-06-26 |
US20020084369A1 (en) | 2002-07-04 |
CA2353091C (en) | 2008-08-12 |
BR9916082A (en) | 2001-09-04 |
WO2000034300A9 (en) | 2001-05-10 |
WO2000034300A1 (en) | 2000-06-15 |
ATE252597T1 (en) | 2003-11-15 |
EP1137657A1 (en) | 2001-10-04 |
JP2002531645A (en) | 2002-09-24 |
EP1137657B1 (en) | 2003-10-22 |
WO2000034300A8 (en) | 2001-05-31 |
US6491243B2 (en) | 2002-12-10 |
BR9916082B1 (en) | 2010-01-26 |
US5968997A (en) | 1999-10-19 |
DE69912309T2 (en) | 2004-08-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20181203 |